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Three common faults and solutions of LED lamp
Adddate:2017-09-08 16:20????Hits:

ED lamp with its high brightness, low energy consumption, long life and other characteristics, gradually seize the current lamp market. Generally speaking, LED lights are very difficult problems. In the LED lights problem, there are only three kinds of faults: the lights are not bright, the lights are dim, and the lights are flashing after they are turned off. Today we will analyze each problem by item by piece.

Structure of LED lamp

There are two forms of LED lights, one is ceiling lamp and the other is bulb. No matter what kind of form of the lamp, the internal structure is the same, divided into beads and drive.

Lamp beads

Open the shell of the ceiling lamp or the white plastic part of the bulb. You can see a yellow rectangular board inside. The circuit board is light yellow. Lamp is luminous body LED lamp, which determines the number of LED lamp brightness.

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Driver

The driver of the LED bulb is installed at the bottom, but not visible. The dome light drive is a black box that requires the driver to be installed first when installing the luminaire.

Drive with constant current, step-down, rectifier, filtering and other functions.

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LED light is not bright solution

When the light doesn't work, you should first make sure the circuit is ok. If the new lamp, should use the pencil measurement, or the installation of an incandescent lamp, to see if there is a voltage circuit. Determine the circuit no problem, you can start the following overhaul.

Drive problem

The lights don't work. Nine out of ten is a drive problem. The current and voltage requirements of the LED are high. The current, voltage is too large or too small to be normally lit. Therefore, the constant current driver and rectifier, Buck device and so on are needed to maintain the use of the device. If the lights are not bright lights up, should first consider is the problem with the drive. At this point you can buy a new drive for replacement.

Solution to dim brightness of LED lamp

This problem should be solved together with a problem. This may be the case when the brightness of a light is dimmed or not turned on.

Light problem

The LED lamp beads, is divided into a string of a string, each string beads, is a series, between the string and string, parallel. Therefore, this string has a lamp burned, will lead to a string of beads which are not bright. If each string has a lamp burned, it will cause the whole lights are not bright. If every string has a lamp burned, to consider on the drive capacitance or resistance problem. Burn the beads and normal beads from the appearance can be read out, burn the beads with a black dot in the middle position, and the dot is indelible.

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The red circle is burning lamp

If the number of beads burned is not much, can be burned two feet behind the bead welding electric soldering iron together. If the number of beads burned too much, it is recommended to buy a piece of board for beads, so as not to affect the lighting brightness.

Solution for flashing after LED lights are turned off

When the lights are switched off, the first thing to do is to confirm the wiring. The most likely problem is the zero line of the switch control. This time should be corrected in time to avoid danger, the correct way is to switch the line of fire control, zero line light.

If there is no problem with the circuit, it is possible that the LED lamp produces a self inductance current. The easiest way is to buy a 220V relay that connects the coil to the light bulb.

  新葡的京集团3522vip

LED lamp with its high brightness, low energy consumption, long life and other characteristics, gradually seize the current lamp market. Generally speaking, LED lights are very difficult problems. In the LED lights problem, there are only three kinds of faults: the lights are not bright, the lights are dim, and the lights are flashing after they are turned off. Today we will analyze each problem by item by piece.

Structure of LED lamp

There are two forms of LED lights, one is ceiling lamp and the other is bulb. No matter what kind of form of the lamp, the internal structure is the same, divided into beads and drive.

Lamp beads

Open the shell of the ceiling lamp or the white plastic part of the bulb. You can see a yellow rectangular board inside. The circuit board is light yellow. Lamp is luminous body LED lamp, which determines the number of LED lamp brightness.



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